Gas range



Oct. 25 1927.

A. F. HARTER GAS RANGE Filed May 9, 1925 Oct. 25 1927. 1,646,859

A. F. HARTER GAS RANGE Filed May 9, 1925 3 Sheets-Sheet 2 Oct. 25 1927.1,646,859

A. F. HARTER GAS RANGE Filed May 9,. 1925 asheets-sheez five Z02",

Patented Oct. 1927.

UNITED STATES 1,646,85 PATENT OFFICE.

AUGUSTUS F. HARTER, OF OAK PARK, ILLINOIS, ASSIGNOR 'IO CEIBBEN 8tSEXION COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

GAS RANGE.

Application filed my a,

This invention relates particularly to gasranges provided withburner-boxes having front and rear burners mounted therein.

The invention is particularly useful in a range having the burner-boxclosed except at its front side. In such case, the rear burners operatevery inefficiently. A phenomenon termed floating occurs. That is, theburning gas appears to float away from 11- its point of issuance fromthe rear burners and an incomplete combustion results.

In accordance with the present invention, recondary air-supply conduitsare mounted in, or connected with, the burner-box and 5 serve to supplythe additional air to the rear burners which is required to effectcomplete combustion.

The invention is illustrated in its preferred embodiment in theaccompanying 2o drawings, in which- Fig. 1 represents a frontelevational View of a gas-range embodying the invention; Fig. 2, a planview of the same; Fig. 3, a plan view, with the top plates of theburnerbox, which forms the cooking top of the range removed; Fig. 4:, abroken plan sectional view showing one of the secondary air-supplyconduits employed; Fig. 5, a broken plan sectional view illustratlng amodification; Fig. 6, a broken vertical sectional view taken asindicated at line 6 of Fig. 3; Fig. 7 a broken vertical sectional viewtaken as indicated at line 7-7 of Fig. 3; Fig. 8, a broken verticalsectional vlew illustrating a slight modification of the air conduitshown in Figs. 1 and 4; and Fig. 9, a broken plan section illustrating afurther modification of the invention.

Referring to Figs. 1-4, and Figs. 6 and 7, A designates a stove-bodyprovided with an oven A equipped with a door A B designates a burner-boxsurmounting the oven and equipped with a top B which forms the cookingtop of the range; 0, C designate front burners mounted in theburner-box; C, G designate rear burners mounted in the burner-box; and Ddesignates a gas manifold which supplies gas to the tubes D, which, inturn, discharge into the mixertubes D which supply the burners. As iswell known, the burners are supplied with a mixture of gas and airthrough the tubes D on the Bunsen burner principle.

The body of the range may he of any suitable construction, and the rangemay be pro- 1925. Serial No. 29,097.

vided with any suitable ovens, utensil compartments, warming chambers,or the like. In the illustration given, the range is shown provided witha single oven whlch 1S surmounted by the hurner-box B.

In the preferred construction the burnerbox B comprises side-walls l anda rear wall 2. These walls may form a continuation of the walls of theoven. The burnerbox also has a bottom wall 3 which is separated from thetop wall 4 ofthe oven by a flue space 5. The burner-boxis open at itsfront side, as indicated at 6. The mixertubes D extend through thisfront opening into the chamber of the burner-box.

The top 13 of the burner-box which forms also the cooking top of therange, preferably comprises a perimetrical member 7 which is provided atits inner edge with a rabbet 7 and a pair of plates 8 supported by themember 7 and provided with holes in which are mounted the removal lids9. At the front corners of the stove are the standards 6 which serve asadditional supports for the top B. These standards flank the frontopening 6 of the burner-box.

The burners are supported in the burner box in any suitable manner. Inthe illustration given, brackets 10 serve as supports for the rearburners.

A removable drip pan E is shown supported on the bottom wall 3 of theburnerox. Located adjacent the inner surfaces of the side-walls 1 of theburner-box are sec ondary air-supply conduits F. These are in the formof sheet-metal U-shaped members having attaching fiangesll which aresecured to the side-walls 1 as by means of stove bolts 12. The side-wall1 forms the fourth side of the square conduit.-

The conduits F preferably are open at their front ends as indicated at13 and also at their rear ends as indicated at 13 Each conduitpreferably is provided with a transverse partition wall 1 1 disposedmearthe center of the conduit. This partition wall is flanked by dischargeorifices 15. These orifices are located somewhat in front of the rearburners so as to be in position to supply air thereto. It is preferredto have the top wall of the conduit slope upwardly from inlet to outlet,as shown in Fig. 6.

The rear wall 2 of the burner-box is provided with an outlet passage, orpassages, 2

V which open into a transverse flue 16 secured to the rear upper'portion'of the-rangeand fitted with a stove-pipe 17.

In the use of the range, a mixture of air and gas passes through theburner-tubes to the burner. A secondary air supply reaches the frontburners through the open front side of the burner-box. Contrary to whatmight be supposed, a sufficient secondary supply of air will not becarried to the rear burners from the open front side of the burner-box.On the other hand, when the air conduitsHF are employed, they readilyserve to conduct a sufficient secondary supply of air to the rearburners to enable complete combustion to be effected. It has been found,in practice, that this expedient completely obviates the phenomenon offloating, and enables the rear burners to operate as efficiently as thefront burners.

Inthe modification shown in Fig. 5, 1'"? designates a side-wall of aburner-box, and C designates a rear burner. In this modification, asecondaryair-supply conduit F opens through the side-wall 1 to theexternal atmosphere and opens at its inner end adja. cent the burner CThe conduit F serves to furnish a secondary air-supply to the rearburner. However, it is preferred to employ conduits of greater length,such as the com duits F previously described, for the reason i that theyserve to induce a better flow of air to the rear burners. a V c ,In themodificationshown in Fig. ,8, F designates an air conduit. This conduitis similar to the conduits F previously described, except that theconduit F? is provided with a sloping inner wall 18 which permits thelower portion of the conduit to project somewhat under the mixer-tube Dof the rearburner.

In the modification shown in Fig. 9, 1 represents a side-wall of aburner-box similar to that described in connection with Figs. 14. Inthis case, a secondaryairsupply conduit F is provided at the rear cornerof the burner-box. This conduit is provided with a front wall 19, withan ad mission orifice 20 at its rear end,'and with a discharge orifice21 which opens through the inner side-wall of the conduit just back of ithe front wall 19. The orifice21 is in posit-ion to furnish air to therear burner.

It will be understood that in the modifications shown in Fig. 5 and Fig.9, the secondary air-supply conduit may be duplicated atthe other sideof the range.

The foregoing detailed descrlption has been given for clearness ofunderstanding only, and no unnecessary limitations should 5 beunderstood therefrom, but the appended and afclosed cooking top, anoutlet flue communicating with the rear portion of said burner box,front and rear burners located in said burner box, mixer tubes connectedwith said burners, and a secondary air-supply conduit within said burnerbox and ex-, tending parallel with the sides thereof'and having itsdischarge orifice in said burner box located adjacent the rear burner.

2. In a gas-range, thecombinationofa stove body provided with an ovenand above said oven with a burner box having an open front and having arear wall and side Walls and a'closed cooking top, an outlet fluecornmunicating with the rear portion of said burner box, front and rearburners located in said burner box, mixer tubes connected with saidburners, and secondary air-supply conduits within said burner box andextending parallel with the sides thereof, each conduit having a singledischarge opening, said opening being disposed adjacent one of the rearburners.

AUGUSTUS F. HARTER.

